Bass Scales 5 Strings Vol. 6: Natural Minor

Guitar Scales Bebop Major: Vol. 20

Bass Scales Vol. 7: Phrygian Mode

Bass Scales Vol. 6: Dorian Mode

Bass Scales Vol. 11: Locrian Mode

Bass Scales Vol. 12: Harmonic Minor

Bass Scales Vol. 16: Natural Minor

Guitar Training Vol. 9: 50 Practice Exercises For Playing The Pentatonic Scale

Bass Scales Vol. 8: Lydian Mode

Guitar Chords Vol. 1: Open Chords

Guitar Training Vol. 1: 25 Chromatic Exercises Beginner Level

Guitar Scales Voodoo Blues: Vol. 17

Guitar Scales Phrygian Mode: Vol. 7

Guitar Scales Dorian Blues: Vol. 14

Guitar Scales Minor Blues: Vol. 4